baber/WOPTO huggingface dataset:
Patent GB-640012-A (GB)
Title: Improvements in or relating to radio navigation systems
IPC: G01S1/02
Filed: 1947-05-16
Abstract: 640,012. Radio navigation. CALVERT, R., and WAYNE KERR LABORATORIES, Ltd. May 16, 1947, No. 13282. [Class 40 (vii)] Apparatus indicating the distance from a preselected point of a vehicle whose position is known with respect to the intersecting hyperbolic contour lines of a radio navigational aid comprises means for determining the differences between two co-ordinates representing the position of the vehicle and the two corresponding co-ordinates of the preselected point and means combining these differences in dependance on the angle between the sets of hyperbolic contour lines in the area so as to determine the required distance. The invention is of particular use where it is required to orbit an aircraft and it is assumed that the contour lines may be regarded as straight over the area covered by the orbit. If this assumption is untrue the orbit ceases to be circular unless special correcting devices are employed. As indicated in Fig. 1, OP, the distance of the vehicle P from the point O, is equal to where #R and #G are the differences between the respective co-ordinates of O and P, rand g are factors relating the contour line spacing with distance over the area and # is the angle between the sets of contour lines. Computor. A device for determining OP from the above expression comprises a constant source S of alternating voltage of arbitrarily chosen frequency. A1 and A2 are attenuators adjusted in accordance with Cosec #/r and Cosec #/g respectively, whose outputs are fed through phase-shifter PS set according to # to transformer T1 and directly to T2 respectively. The secondaries of T1 and T2 which are centretapped to earth are connected across potentiometers P1 and P2, the distance of whose sliders from their centre points is set according to #R and #G and the sum of the outputs tapped off fed to A.C. voltmeter V which may be calibrated in miles. A simple adjustment device for P1 or P2 consists of a shaft manually or automatically set in accordance with one of the co-ordinates of the vehicle driving a differential device whose other input is equivalent to the corresponding co-ordinate of O so that the output is equivalent to the difference of the co-ordinate values and may be used directly to adjust the potentiometer. It is pointed out that #, r, and g, are likely to be the same over a large area round an airport and where the device is carried by an aircraft this craft may be controlled by meter V to orbit about any desired point whose co-ordinates are set into the differentials. Specification 620,479 is referred to.
Patent GB-136104-A (GB)
Title: Improvements in and relating to Storage Bins and the like for Grain and like Substances.
Inventor: WINTER ROBERT CHRISTIE
IPC: G01N1/10
Filed: 1919-05-27
Abstract: 136,104. Winter, R. C. May 27, 1919. Granaries, corn-bins, and corn-silos; storage bins; sampling granular &c. materials.-A storage bin for grain &c. is fitted with a sampling device comprising a tubular shoot 6 having a number of ports 8 at different heights, each port being opened and closed by means of a ported cylindrical valve 10. The valves are carried by a tubular shaft 9 which is rotated by a hand-wheel 11, and the ports may be angularly displaced so that only one is open at a time, or all may open simultaneously. One or more buckets may be lowered within the tube 9 to receive the samples of grain &c. In a modification, the shaft 9 forms the shoot and is supported and surrounded at intervals by ported orackets which constitute the valves.
Patent GB-160688-A (GB)
Title: Improvements in and relating to detachable handles for saucepans, dust-pans, flour scoops and other utensils
IPC: A47J45/06
Filed: 1920-05-14
Abstract: 160,688. Robinson, F. May 14, 1920. Handles.-A detachable handle a for a saucepan, dust-pan, flour scoop, &c. is secured to a rectangular plate b adapted to slide upwards into a flanged guide c provided with a stop e. The guide c is either secured directly to the body of the utensil, or it is secured to an intermediate plate f soldered or riveted to the utensil. The handle may be held in place by friction, or it may be temporarily secured by bending- in the lower parts d<1> of the flanges d.
Patent GB-891762-A (GB)
Title: Building slab
IPC: E04C2/16
Filed: 1957-10-21
Abstract: 891,762. Laminates. HODGKINSON, T. Jan. 19, 1959 [Oct. 21, 1957], No. 13394/60. Divided out of 891,761. Drawings to Specification. Class 140. A wood-wool building slab has secured to one or both sides, as by cement-slurry, a sheet of hessian scrim.
Patent GB-696524-A (GB)
Title: Improvements in or relating to recovery of oil from reservoirs
IPC: C09K8/58
Filed: 1951-06-06
Abstract: 696,524. Chemical treatment of oil bearstrata. STANOLIND OIL & GAS CO. June 6. 1951 [July 27, 1950], No. 13409/51. Class 85. A method of recovering oil from a subterranean oil reservoir comprises the steps of injecting a liquid oil solvent or a liquid miscible with the oil in said reservoir and with a scavenging fluid which is injected into the reservoir after the first injected liquid to displace said liquid, which in turn displaces the oil in the reservoir towards an extraction well. The liquid or liquid oil solvent is of sufficient volume that at all times in said reservoir there is a narrow zone 11 of said liquid, substantially pure, between said oil and said scavenging fluid, the zone 11 being separated therefrom by impure transition zones 10, 12. The volume of liquid or liquid oil solvent is between 3 and 10 per cent of the pore volume of the reservoir to be traversed. A suitable liquid oil solvent is liquefied petroleum gas to which water may be added, whilst the scavenging fluid may be a predominantly hydrocarbon gas or water. ,
Patent GB-997372-A (GB)
Title: Method of and composition for polishing glass
Inventor: ALEXANDER HAROLD MILNE
IPC: B24B7/24
Filed: 1962-04-07
Abstract: A glass polishing composition comprises (a) ceric oxide, and (b) a mixture of rare earth nitrates, suitably in the form of an aqueous slurry.  Generally, the slurry comprises, by weight 100 parts water; 1-60, preferably 1-10, parts (a); and 0.5-10, preferably 0.5-5 parts (b).  It is also preferred that (b) includes about 36-90% of cerous nitrate hexahydrate, and an especially favoured mixture comprises 48.4% Ce (NO3)3, 25.5% La(NO3)3, 17.7% Nd(NO3)3, 5.1% Pr(NO3)3, 3.06% Sm(NO3)3, 2% Gd(NO3)3 and 0.34% Y(NO3)3, all such nitrates being present as the hexahydrates. Specification 997,371 is referred to.
Patent GB-573980-A (GB)
Title: Improvements in or connected with rangefinders, heightfinders, and like optical measuring instruments
IPC: G01C3/12
Filed: 1940-08-27
Abstract: 573,980. Range-finders. BARR & STROUD, Ltd., and STRANG, J. M. Aug. 27, 1940, No. 13500. [Class 97 (i)] Instruments having a selfcontained base, and in which the eyepiece or eyepieces remain stationary when the range plane is elevated or depressed, have end reflectors and a measuring prism arrangement which moves with the range plane, and objectives and a central reflecting system which remains stationary with the eyepieces. As shown, end prisms 2 and measuring prisms 3 move with a tube B rotatable about its axis within a fixed bearing tube A and around a fixed tube C secured by a connection 1 to the tube A. A tubular frame D is fixed in the tube C and carries objectives 4 and a centre prism system F ; the right hand prism 2 has roof faces 2a, and the centre prism 7 has roof faces 7a, to cause the right hand beam emergent from the system F to rotate in the same sense as the left hand beam as the range plane is elevated &c. The eyepiece H is carried by a mounting E secured to the tube A, and contains a prism J rotatable with a cylindrical carrier 8 by teeth on the carrier engaged by a rack 10 moved longitudinally, as the tube B is rotated, by a helical cam slot 11 engaging a roller 13 on the end of the rack ; the rotation of the prism J is such as to maintain a fixed attitude for the eyepiece images. A central prism system, erecting prisms, and eyepieces are described for a binocular instrument of the overlapping image type. Specification 572,381 is referred to.
Patent GB-1255739-A (GB)
Title: Improvements in and relating to the sealing of bottles or other containers
Inventor: WALLER CHARLES DOUGLAS
IPC: B65D41/04
Filed: 1969-03-14
Abstract: 1,255,739. Container closures. C. D. WALLER. 14 March, 1969, No. 13606/69. Heading B8T. A non-porous resilient plastics sealing wad 1, Fig. 3, may be retained in a screw cap 12 by means of elastically deformable peripheral projections 7, and has a domed face 5 which, upon screwing the cap down on a container 8, sealingly engages the edge 10 of the mouth 9 of the container. The peripheral projections 7 allow a self-centring action of the domed face 5 relative to the mouth of the container. In modiflctions, Fig. 4 (not shown), the domed face is of smaller radius and is surrounded by a frustoconoidal ring face 16, the peripheral projections being located either at the bottom or the top of ring-zone 2; or, Fig. 7 (c) (not shown), the peripheral projections may be located medially with respect to the outer wall of the wad.
Patent GB-479575-A (GB)
Title: Improvements in or relating to piezo-electric crystal arrangements
IPC: H03B5/34
Filed: 1937-05-14
Abstract: 479,575. Piezo-electric crystal mountings. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. May 14, 1937, No. 13692. Convention date, May 14, 1936. [Class 40 (v)] Relates to crystal assemblies in which a number of differently tuned crystals c are arranged in an annular housing b and any one of them can be selected by means of a switch comprising a wiper k and contacts g, so that the connecting leads can be made short and of the same length for each of the crystals. According to the invention, a thermostatic device is provided and an oscillator valve is located in the central space X. Thus, a thermostatic heater winding o is arranged inside or outside the housing b, and the whole is protected from temperature-changes by an outer annular casing a. An oscillator valve R and, if desired, other circuit elements are arranged in the central space X of the annulus, the anode lead of the valve having a screen m. Instead of a common inner housing b, separate housings may be provided for the individual crystals, Fig. 3 (not shown).
Patent GB-200291-A (GB)
Title: Improvements in fasteners for window sashes or the like
IPC: E05B65/08
Filed: 1922-05-16
Abstract: 200,291. Smith, G. H., and Smith, H. May 16, 1922. Sliding bolts. - Relates to sash fasteners of the type in which a spring-shot bolt 3 has a projection 11 sliding in a slot 5 in the casing 1 and adapted to be turned to engage in lateral slots 6, 7, to secure the bolt in the shot and withdrawn positions respectively, and consists in providing the casing 1 on its unlerside with a channel 2 open at one end so that the bolt with its projection may be assembled by passing it upwards through the channel 2, inserting its reduced end through a hole in the closed end 4 and screwing on the operating handle. 9.
Patent GB-916434-A (GB)
Title: Permanent magnet clutch for altitude controller
IPC: F16D27/02
Filed: 1960-04-19
Abstract: 916,434. Overload slip couplings. KOLLSMAN INSTRUMENTS CORPORATION. April 19, 1960 [April 20, 1959], No. 13710/60. Class 80 (2). [Also in Group XXXVIII] An overload slip coupling, for use in an aeroplane automatic pilot or the like, comprises an input shaft 46, Fig. 5, fast with which is a permanent magnet 72 and a friction washer 74 adjustably mounted upon screw-threads 76, the flanged end of a driven coupling-sleeve 80 rotatably and axially movable upon a spigot 78 fast with the shaft being drawn into engagement with the friction washer by the magnetic flux. A radial arm 82 fast with the driven sleeve 80 lies between two adjustable stop-screws 84, 86, so that rotation of the driven sleeve is limited, continued rotation of the input shaft 46 beyond a predetermined angle merely causing the coupling to slip. In the form shown, the coupling is applied to an altitude control device coupled to the automatic pilot of an aeroplane, pressure-sensitive bellows 58, 60, Fig. 1, connected by cranked arms 50, 52, Fig. 3, to a radial arm 48 fast with the shaft 46, moving with changes in ambient pressure caused by variations in the aeroplane height to rotate the shaft one way or the other. Fast with the driven sleeve 80 of the coupling is an arm 70 forming the I part of an E-I voltage-sensitive device 62 having coils 64, 66, 68 connected to the automatic pilot. Movement of the arm 70 causes changes in the voltage produced by the device 62, these voltage fluctuations being fed to the automatic pilot for adjustment of the aeroplane elevator surfaces. Alternatively, the device 62 may be replaced by a potentiometer system.
Patent GB-1000135-A (GB)
Title: Improvements in sound communication in liquid media
IPC: B63C11/26
Filed: 1962-04-10
Abstract: 1,000,135. Subaqueous signalling. L. MARTELLI & C. REINBERG. April 10, 1962 [April 10, 1961], No. 13845/62. Heading G4F. [Also in Division B7] Apparatus for subaqueous sound communication comprises, as parts of the transmitter, a throat microphone 6 connected to an amplifier 8, the output of which is converted in a transducer 9 into sound waves which are amplified in a gasfilled sound-transmitting housing 10 of such material that the acoustical resistance of the housing wall is the square root of the product of the acoustical resistance of the gas in the housing and that of the surrounding liquid. The wall thickness may vary as shown. The housing encloses an exponentially shaped chamber 11 and is reinforced by a perforated tube 12. The receiver comprises a microphone 13 mounted at the end of housing 11 and connected through an amplifier 14 to earphones 15. The signalling apparatus is used in conjunction with a mouthpiece (see Division B7).
Patent GB-543617-A (GB)
Title: Improvements in or relating to tell-tale devices for telegraph systems
IPC: H04L12/06
Filed: 1940-09-04
Abstract: 543,617. Type-printing telegraphy. CREED & CO., Ltd., and GRIFFITH, R. G. Sept. 4, 1940, No. 13859. [Class 40 (iii)] ] In an answer-back having a code drum controlling the transmission, of identifying signals, the step-by-step movement of the drum is controlled by means rotating continuously during the cycle of operations of the drum. The drum 2 has a series of wards 3 controlling selector members 4 co-operating with the keyboard transmitter and is frictionally driven by a continuously rotating shaft 1. The drum is normally held by a detent 9 which is released by the " who-are-you " signal. A detent 5 engaging the wards 3 permits step-by-step movement of the drum and is carried by a lever 6 engaged by a cam 7 on shaft 1, so that if the cam 7 has one or more lobes the drum moves one or more steps for each revolution of the shaft 1. The cam 7 also, controls a lever 8 for releasing the transmitter cam shaft.
Patent GB-1430063-A (GB)
Title: Separator
IPC: B01D35/20
Filed: 1972-03-24
Abstract: 1430063 Filters; cleaning WALLIS SEPARATORS LTD 14 March 1973 [24 March 1972] 13884/72 Heading BID The screen of a filtering apparatus, along which screen solids travel, is subjected to acoustic pressure waves by a transducer positioned close to the downstream side of the screen, to prevent clogging of the screen. The screen may be planar, part-cylindrical or conical and may comprise stainless steel mesh or porous or sintered material. In Fig. 1 the apparatus comprises a pivotable screen 2, an ultrasonic transducer 13 surrounded by a cooling container, a pivotable header box having an adjustable orifice 7 for supplying the material to be filtered, and angled plates 15 for breaking the surface tension of the liquid passing through the screen 2. The container 14 contains filtered liquid or liquid supplied by tube 17.
Patent GB-239812-A (GB)
Title: Improvements in silencers for explosion motors
IPC: F01N1/08
Filed: 1925-05-27
Abstract: 239,812. Westling, G. Z. May 27, 1925. Exhaust silencers.-A silencer comprises a tube 1 in which are a number of screw-like stationary members 3 mounted on a stationary shaft 5, which is removable with the members 3 from one end of the tube without taking the latter to pieces. As shown, the members 3 are spaced apart by distance sleeves 7 held in place by a nut 8 and the shaft is secured to a screw plug 9. The gases enter the tube by the inlet 2 and escape through perforations in the wall of the tube.
Patent GB-315513-A (GB)
Title: Improvements in apparatus for the hydrogenation of coal, oil or the like
IPC: C10G1/06
Filed: 1928-05-12
Abstract: 315,513. Gordon, K., and Imperial Chemical Industries, Ltd. May 12, 1928. Hydrogenation, destructive. - In the destructive hydrogenation of oil or coal and oil mixtures the wall of the reaction chamber is cooled by flowing over it a stream of the relatively cool material to be hydrogenated. A reaction chamber 1 having a gas inlet 3 is provided with an interior container 5 so that the oil entering at 2 forms a cooling jacket between the walls of the chamber 1 and the reaction space. The gaseous and liquid products of the reaction leave through pipes 4, 8 respectively. The jacket of cool oil enables the wall of the reaction vessel to be maintained at 250‹ C. while the temperature in the reaction zone is at 400-500‹ C. by introducing hydrogen at a higher temperature. Specification 309,258 is referred to.
Patent GB-238037-A (GB)
Title: Improvements in the manufacture of axle guards
IPC: B21K7/00
Filed: 1924-06-10
Abstract: 238,037. Jenks & Cattell, Ltd., A. E., and Jenks, A. E. June 10, 1924. Railway and tramway vehicle details.-In the manufacture of axle guards such as described in Specification 8454/94 from a piece of strip 8, which is slotted at 9, cut across at 10 and afterwards bent to shape, the arched centre portion of the guard is first produced by laying the heated bar with its saw cut edge against a pair of abutments such as rollers A and advancing a round nosed punch D comforming to the interior shape of the arched portion, the bending of the bar being effected progressively by other pairs of rollers. B, C. Plates R are inserted in the slot 9 to transmit the bending pressure from the outer sides 11 to the inner sides 12 and are removed at the end of this first operation. The sides 11 are then bent outwards to their final shape by advancing a tool H having an internal portion M comforming to the exterior shape of the arched portion 13 of the guard and two side faces N coacting with a pair of outer tools G. In this second operation the arched portion 13 of the guard is pressed inwards somewhat, for which purpose the punch D is allowed to go back and the pressure of the tool H is taken by stops Q which rise up behind the movable slide at the completion of the first operation. Stops g on the outer tools G hold the finished guard against backward movement with the tool H when the latter is withdrawn. Flanges on the punch D and similar flanges on the rollers and tool H prevent buckling of the work. The two operations may be carried out on separate machines. Specification 11276/01 also is referred to.
Patent GB-848280-A (GB)
Title: Process for the degasification of molten steel
Inventor: GLOVER THOMAS SCOTT
IPC: C21C7/10
Filed: 1958-05-02
Abstract: A process of degasifying molten steel comprises passing the molten metal into a vacuum chamber through one or more orifices in which the numerical ratio of the perimeter to the cross-sectional area is at least 4.5 to 1.  The orifice may be polygonal, e.g. a slot 4 inches long by one half inch wide, or a circle of diameter not more than 0.88 inch.  Several orifices may be used to increase the rate of flow.
Patent GB-543500-A (GB)
Title: Improvements in or relating to electrical firing devices
IPC: F42B3/103
Filed: 1940-09-12
Abstract: 543,500. Electric blasting fuzes. HERCULES POWDER CO. Sept. 12, 1940, No. 14150. Convention date. May 31. [Class 9 (i)] A bridge plug for maintaining the leg wires of an electric firing device, for example an electric blasting cap, in spaced relation comprises a relatively thin disc of di-electric material through holes in which the leg wires are passed means being provided for preventing longitudinal and radial movement of the wires with respect to the disc. Fig. 1 shows a blasting cap in which leg wires 6 are passed through a disc 9 and held in position by flanged collars 7, the wires having a high resistance bridge 5 embedded in explosive 4. A waterproof ,plug of asphalt, tar &c. and a sealing charge 11 of sulphur, resin &c. hold the plug in place. The collars 7 are attached to the wires by welding, soldering, clamping or swaging. Various means for securing the leg wires are described. Fig. 2 shows wires with offset portions 12 engaging one side of the disc 9 and with collars 14 the other side. Alternatively the wires may be secured by fillets of solder or by upsetting portions of the wire on opposite sides of the disc. Fig. 9 shows the wires passed through eyelets 21 with split ends, one half 22 being bent' over tight against the disc and the other half 24 welded to the wire. In another modification the wires are passed through the disc, which is formed of three layers of rope paper, kinked, and the kinked portions pressed against the two surfaces of the disc. The disc may be of vulcanized fibre, cardboard, paper impregnated or not with tar or asphalt, masonite fibre, synthetic resin such as phenol-aldehyde, thioureaaldehyde, or vinyl resins alone or filled with wood flour, mineral or fibrous substances.
Patent GB-748778-A (GB)
Title: Improvements in or relating to electron camera tubes for stereoscopic television
Filed: 1954-07-21
Abstract: 748,778. Colour television tubes. CELESTIN, W. E. July 21, 1954, No. 14193/53. Class 39 (1). A colour and stereoscopic television camera tube comprises a storage target 11 carrying on its front face lenticulations 13, either spherical or cylindrical in shape, a three-colour filter 15, a compound optical lens 16, 17, a diaphragm 18 having, Fig. 2, opaque sectors 19, 20 and transparent sectors 21, 22, and two pairs of prisms 23, 24 and 25, 26. The prisms transmit light corresponding to left-eye and right-eye views through the diaphragm to the lens system. The prisms 23, 26 may be rotated slightly. Specification 722,501 is referred to.
Patent GB-1149022-A (GB)
Title: High-pressure electric discharge lamps
IPC: H01J61/24
Filed: 1966-03-31
Abstract: 1,149,022. Metal vapour lamps. SYLVANIA ELECTRIC PRODUCTS Inc. 31 March, 1966 [19 April, 1965], No. 14292/66. Heading H1D In a high-pressure discharge lamp, an arc tube having a filling of mercury, halogen and sodium atoms is mounted in an outer envelope through one end of which leads for the arc tube enter, by independent supports at its two ends, the support at the end remote from that at which the leads enter engaging the jacket wall to centre the arc tube, and the current lead to the electrode at the remote end of the arc tube being arranged remote from the latter, to minimize the passage of sodium ions through the wall of the arc tube during operation of the lamp. The arc tube 2 is supported at its near end by a strap 7 clamped around its press seal, and at the remote end is centred by resilient members 9 which engage the inner surface of the outer envelope, and are themselves attached to a frame 10 secured to the arc tube by a strap 11 clamped around its press seal. The thin lead 20 to the electrode 3 at the remote end of the arc tube lies closely adjacent the outer envelope; at the other end a starting probe 5 with a resistor 13 in series is short circuited to the adjacent electrode 4 by a bimetal switch 22 when the lamp has started, to minimize electrolysis therebetween.
Patent GB-198680-A (GB)
Title: Adjusting apparatus for cinema reflector lamps
IPC: H05B31/00
Filed: 1923-05-31
Abstract: 198,680. Ernemann-Werke Akt.-Ges. May 31, 1922, [Convention date]. Reflector holders.-A reflector is secured at 4 to a bent lever 3 pivoted at 2 to a frame 1 and is adjustable vertically by a differentially threaded spindle 5 engaging a nut 7 pivoted to the lever 3 and a nut 6 pivoted to the frame 1. Horizontal adjustment of the reflector may be effected by similar means.